CN211828311U - A kind of transformer high voltage bushing heat dissipation device - Google Patents

Abstract

The utility model discloses a heat dissipation device for a high-voltage bushing of a transformer, which comprises a porcelain sleeve and a conducting rod; the porcelain sleeve is located at the outermost part of the sleeve, and a large umbrella skirt and a small umbrella skirt extend outward and downward from the porcelain sleeve. The porcelain sleeve is connected with a flange near the bottom. The top of the porcelain sleeve is provided with a pressure ring to seal the top of the porcelain sleeve. The top of the pressure ring is provided with a nut. The gap between the porcelain sleeve and the conductive rod is an oil gap. The bottom end of the porcelain sleeve is connected with a metal gasket to seal the bottom of the porcelain sleeve; the conductive rod axially penetrates the porcelain sleeve, the top end of the conductive rod is provided with an upper mounting part, the top end of the conductive rod is connected with a terminal, the A lock ring is sleeved on the conductive rod not far below the pressure ring, and a lower mounting portion is provided at the bottom end of the conductive rod. Preferably, both the upper mounting portion and the lower mounting portion are provided with mounting holes.

Description

A kind of transformer high voltage bushing heat dissipation device

technical field

The utility model belongs to the field of high-voltage electrical components, in particular to a heat-dissipating device for a high-voltage bushing of a transformer.

Background technique

The transformer bushings used in the power system are mainly oil-immersed transformer bushings and some dry-type bushings with gas medium auxiliary insulation. The transformer bushing is the main insulating device outside the transformer box, and the lead wires of the transformer windings must pass through the insulating sleeve. It can insulate between the lead wires and between the lead wires and the transformer shell, and at the same time, it plays the role of fixing the lead wires. However, the existing transformer high-voltage bushings have conductive columns when they are in use, which will generate a lot of heat during operation. The heat dissipation inside the bushing is poor, which is easy to cause damage to the high-voltage bushing of the transformer.

Utility model content

Aiming at the shortcomings of the prior art, the utility model provides a heat dissipation device for a high-voltage bushing of a transformer, which not only has good insulation performance, but also is easy to dissipate the heat of the conductive rod like outdoor, thereby increasing the service life of the bushing.

In order to achieve the above purpose, the utility model provides the following technical solutions: a heat dissipation device for a high-voltage bushing of a transformer, comprising a porcelain sleeve and a conductive rod; the porcelain sleeve is located at the outermost part of the sleeve, and a large umbrella extends outward and downward from the porcelain sleeve skirt and small umbrella skirt, the porcelain sleeve is connected with a flange near the bottom, the top of the porcelain sleeve is provided with a pressure ring to seal the top of the porcelain sleeve, the top of the pressure ring is provided with a nut, and the porcelain sleeve and the conductive rod are connected to each other. The gap between them is an oil gap, and the bottom end of the porcelain sleeve is connected with a metal gasket to seal the bottom of the porcelain sleeve; the conductive rod axially penetrates the porcelain sleeve, the top of the conductive rod is provided with an upper mounting part, and the conductive rod A terminal is connected to the top end, a lock ring is sleeved on the conductive rod not far below the pressure ring, and a lower mounting portion is provided at the bottom end of the conductive rod. Preferably, both the upper mounting portion and the lower mounting portion are provided with There are mounting holes.

Preferably, uniform and parallel radiating fins are arranged on the circumferential wall of the inner surface of the porcelain sleeve.

Preferably, the flange plate is divided into upper and lower discs, and screw holes are provided on the flange plate.

Preferably, the locking ring fixes the top end of the insulating tube with the conductive rod, and the insulating tube is wrapped around the outer surface of the conductive rod.

Preferably, uniform and parallel radiating fins are arranged on the outer wall of the insulating tube.

Preferably, the porcelain sleeve and the heat sinks on the insulating tube are arranged in a cross manner.

Preferably, both the insulating tube and the heat sink are made of ceramics.

Compared with the prior art, the beneficial effects of the present utility model are: first, the design is simple and the manufacturing cost is low; The unit heat transfer area enables the heat generated by the conductive rod to be quickly dissipated to the outside of the casing, extending the service life of the casing.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present disclosure or related technologies more clearly, the following briefly introduces the accompanying drawings that are used in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only the For the disclosed embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without any creative effort.

Fig. 1 is the overall schematic diagram of the utility model casing;

Figure 2 is a partial schematic diagram of the casing of the present invention.

In the picture: 1. Terminal, 2. Conductive rod, 3. Press ring, 4. Oil gap, 5. Heat sink, 6. Insulation tube, 7. Flange, 8. Screw hole, 9. Lower mounting part, 10. Upper installation part, 11, Nut, 12, Lock ring, 13, Small umbrella skirt, 14, Large umbrella skirt, 15, Porcelain sleeve, 16, Metal gasket, 17, Installation hole.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application or uses in any way. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1 and 2, the present utility model provides a technical solution: a heat dissipation device for a high-voltage bushing of a transformer, comprising a porcelain sleeve 15 and a conductive rod 2; the porcelain sleeve 15 is located at the outermost part of the sleeve, and the porcelain sleeve 15 The large umbrella skirt 14 and the small umbrella skirt 13 extend outward and downward. The porcelain sleeve 15 is connected with a flange 7 near the bottom. The flange 7 is divided into two upper and lower discs, and the flange 7 is provided with Screw hole 8, the top of the ceramic sleeve 15 is provided with a pressure ring 3 to seal the top of the ceramic sleeve 15, the top of the pressure ring 3 is provided with a nut 11, and the gap between the ceramic sleeve 15 and the conductive rod 2 is an oil gap 4 , the bottom end of the porcelain sleeve 15 is connected with a metal gasket 16 to seal the bottom of the porcelain sleeve 15 , the inner surface of the porcelain sleeve 15 is provided with uniformly parallel radiating fins 5 on the circumferential wall; the conductive rod 2 axially penetrates the porcelain sleeve 15 , the top of the conductive rod 2 is provided with an upper mounting portion 10, the top of the conductive rod 2 is connected with a terminal 1, and the conductive rod 2 is located not far below the pressure ring 3. A lock ring 12 is sleeved, and the lock ring 12 will The top of the insulating tube 6 is fixed with the conductive rod 2, the insulating tube 6 is wrapped on the outer surface of the conductive rod 2, the outer wall of the insulating tube 6 is provided with radiating fins 5 that are evenly arranged in parallel, the porcelain sleeve 15 and the radiating fins on the insulating tube 6 5 are arranged in a cross, the insulating tube 6 and the heat sink 5 are made of ceramics, and the bottom end of the conductive rod 2 is provided with a lower mounting portion 9, preferably, the upper mounting portion 10 and the lower mounting portion 9 are provided with a lower mounting portion 9. Mounting hole 17.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A transformer high-voltage bushing heat dissipation device, comprising a porcelain sleeve (15) and a conductive rod (2), characterized in that: the porcelain sleeve (15) is located at the outermost part of the sleeve, and the porcelain sleeve (15) faces outwards A large umbrella skirt (14) and a small umbrella skirt (13) extend downward, the porcelain sleeve (15) is connected with a flange (7) near the bottom, and the top of the porcelain sleeve (15) is provided with a pressure ring (3) The top of the porcelain sleeve (15) is sealed, the top of the pressing ring (3) is provided with a nut (11), and the gap between the porcelain sleeve (15) and the conductive rod (2) is an oil gap (4). The bottom end of the porcelain sleeve (15) is connected with a metal gasket (16) to seal the bottom of the porcelain sleeve (15); the conductive rod (2) axially penetrates the porcelain sleeve (15), and the top of the conductive rod (2) is provided with There is an upper mounting part (10), a terminal (1) is connected to the top of the conductive rod (2), and a locking ring (12) is sleeved on the conductive rod (2) not far below the pressure ring (3), so The bottom end of the conductive rod (2) is provided with a lower mounting portion (9), and both the upper mounting portion (10) and the lower mounting portion (9) are provided with mounting holes (17). 2 . The heat dissipation device for a high voltage bushing of a transformer according to claim 1 , characterized in that radiating fins ( 5 ) that are evenly arranged in parallel are arranged on the circumferential wall of the inner surface of the porcelain sleeve ( 15 ). 3 . 3. A transformer high-voltage bushing heat dissipation device according to claim 1, characterized in that: the flange (7) is divided into two upper and lower discs, and the flange (7) is provided with a screw hole (8). 4. A transformer high-voltage bushing heat dissipation device according to claim 1, characterized in that: the lock ring (12) fixes the top end of the insulating tube (6) with the conductive rod (2), and the insulating tube ( 6) Wrap it on the outer surface of the conductive rod (2). 5 . The heat dissipation device for a high voltage bushing of a transformer according to claim 4 , wherein the outer wall of the insulating tube ( 6 ) is provided with radiating fins ( 5 ) that are evenly arranged in parallel. 6 . 6 . The heat dissipation device for a high voltage bushing of a transformer according to claim 1 , wherein the porcelain sleeve ( 15 ) and the heat sinks ( 5 ) on the insulating tube ( 6 ) are arranged in a cross manner. 7 . 7 . The heat dissipation device for a high voltage bushing of a transformer according to claim 6 , wherein the insulating tube ( 6 ) and the heat sink ( 5 ) are made of ceramics. 8 .

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